well, this word defines something that is not goog qualty, It could be some cheap object, that doesn't work tottaly perfect, it's a bad acquisition...It could be maybe a really stupid letter, if it is too bad, or has something wrong it is a calish letter...some punk bands uses this word a lot..

-Hey dude, that bike is so calish, what a calish bike...
-Guys, don't buy that board, its too calish..
-Are you gonna giv her this letter?? it is too calish have this one I made, use this...
-This boxer shorts are so calish, my grandma gave it to me..